US 12,202,274 B2Granted

Printing device

AssigneeBrother Kogyo Kabushiki Kaisha

InventorsKei Kondo, Yasutoshi Kano, Kazuma Hojo

Life of this patent

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Abstract

A printing device includes a thermal head, a rotation shaft extending in an axial direction and rotatably supported, a pivot member connected to the rotation shaft and configured to pivot integrally with the rotation shaft about the rotation shaft, a biasing unit configured to bias the thermal head upward, a first pivot shaft supported by the pivot member, extending parallel to the axial direction, located below the rotation shaft, and configured to pivot integrally with the pivot member about the rotation shaft, a support member supported by the first pivot shaft to be movable along the first pivot shaft and to be pivotable about the first pivot shaft, the support member including a lower end portion located below the rotation shaft, and a pressing portion provided on the lower end portion of the support member and configured to press the thermal head downward.

Claims8

Dependent claims

A printing device comprising:

a thermal head;
a rotation shaft extending in an axial direction and rotatably supported;
a rotation drive portion configured to rotate the rotation shaft;
a pivot member connected to the rotation shaft and configured to pivot integrally with the rotation shaft about the rotation shaft;
a first support portion configured to support the thermal head to be movable in an up-down direction intersecting the axial direction;
a second support portion configured to support the first support portion to be movable parallel to the axial direction;
a biasing unit configured to bias the thermal head upward;
a first pivot shaft supported by the pivot member, extending parallel to the axial direction, located below the rotation shaft, and configured to pivot integrally with the pivot member about the rotation shaft;
a support member supported by the first pivot shaft to be movable along the first pivot shaft and to be pivotable about the first pivot shaft, the support member including an upper end portion located above the rotation shaft, a lower end portion located below the rotation shaft, and an intermediate portion located between the upper end portion and the lower end portion;
a pressing portion provided on the lower end portion of the support member and configured to press the thermal head downward;
and
a movement drive portion configured to move the first support portion in the axial direction.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/162,098Filed 31 Jan 2023 · continuation
Priority: JP 2020-13120331 Jul 2020
Published: US 2023/0173823 A18 Jun 2023
Granted: 21 Jan 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

B41J 2/32
Characterised by selective application of heat to a heat sensitive printing or impression-transfer material: using thermal heads
B41J 2/325
Using thermal heads: by selective transfer of ink from ink carrier, e.g. from ink ribbon or sheet
B41J 23/12
Mechanical power drives: mechanism driven by cams engaging rotating roller
B41J 25/34
Actions or mechanisms not otherwise provided for: bodily-changeable print heads or carriages